Hi, Tyra,
If I were attempting that project this is what I'd use:
Kyoshin Elle chisels: get the 3 mm version: a 2-prong, and a 6-prong should be the best options if you're not buying the whole set.
KS diamond awl: the small one matches the 3 mm chisels.
Economy poly mallet: should be an OK mallet.
KS Pro Edger: get either the #1 or #2. You might find edgers cheaper elsewhere but these come with a rod and two sheets of sharpening paper already.
Ritza "Tiger" thread: excellent German-made thread: very strong and comes already waxed—but not overwaxed like one I got from Tandy that waxed the heck out of my hands. Choose whichever colour best matches the leather you choose.
Needles: I use #4 because I mostly work with very fine thread (Tiger 0.6 mm), and because I like to save on thread (although once I took to piercing the thread BEFORE passing it through the needle's eye, the length of the needle no longer matters; thus, you could get #2 or #0).
A scratch awl (alas, the cheapest that Rocky Mountain Leather carries is about 8 times more expensive than the basic model Tandy sells, which is all you'd need—so much for my shopping list that was meant to save you money on shipping and handling).
Wing dividers to mark your stitch line (sadly, Rocky Mountain Leather is all out of the economy version, but these should be OK.
Leather to your taste. RML carries all kinds of types and colours, they sell it by the square foot, and they'll split it to your preferred weight for free—what's not to like? (NO, I don't work for them, LOL).